@inproceedings{xin2015the,
title={The hyperbolic quadratic eigenvalue problem},
author={Xin Liang, and Ren-Cang Li},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220424220330636783117},
booktitle={Forum of Mathematics, Sigma},
volume={3},
pages={e13},
year={2015},
}